Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 360 · 40 questions

The fast method (Shift both): How much makes the second number round? 68 needs 2 to make 70. Add that amount to BOTH numbers. Take away the round number.

1. 1.123 − 89 =
2. 2.359 − 69 =
3. 3.100 − 79 =
4. 4.453 − 16 =
5. 5.70 − 36 =
6. 6.585 − 69 =
7. 7.495 − 26 =
8. 8.171 − 36 =
9. 9.489 − 76 =
10. 10.505 − 39 =
11. 11.396 − 99 =
12. 12.560 − 97 =
13. 13.251 − 17 =
14. 14.548 − 99 =
15. 15.140 − 29 =
16. 16.188 − 96 =
17. 17.92 − 76 =
18. 18.338 − 29 =
19. 19.252 − 28 =
20. 20.221 − 47 =
21. 21.445 − 16 =
22. 22.369 − 38 =
23. 23.416 − 29 =
24. 24.315 − 29 =
25. 25.442 − 97 =
26. 26.63 − 19 =
27. 27.553 − 59 =
28. 28.59 − 46 =
29. 29.513 − 78 =
30. 30.466 − 68 =
31. 31.517 − 98 =
32. 32.81 − 37 =
33. 33.80 − 67 =
34. 34.96 − 38 =
35. 35.115 − 46 =
36. 36.292 − 46 =
37. 37.400 − 89 =
38. 38.263 − 48 =
39. 39.390 − 59 =
40. 40.377 − 36 =

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